Axial electromagnetic motok with



Dec. 8, 1953 c. s. WEYANDT AXIAL ELECTROMAGNETIC MOTOR WITH OPPOSITELY FACING POLE FACES 3 Sheets-Sheet l Wagons/2 Filed March 7, 1951 C. S. WEYANDT AXIAL. ELECTROMAGNETIC MOTOR WITH Dec. 8, 1953 2,662,192

CPPOSITELY FACING POLE FACES 3 Sheets-Sheet 2 Filed March 7, 1951 7 d 20 2 2 mm, w E5 i m n GA CW7 Dec. 8, 1953 c s WEYANDT 2,662,192

AXIAL ELECTROMAGNETIC MOTOR WITH OPPOSITELY FACING POLE FACES Filed March 7, 1951 3 Sheets-Sheet 5 IN VEN TOR.

CO/"/ 5. Wgyanof Patented Dec. 8, 1953 UNITED STATES PATENT OFFICE Carl S. Weyandt, Homer City, Pa.

Application March 7, 1951, Serial No. 214,360

'7 Claims. 1

This invention relates generally to electromagnetic motors for so as feeder motors or packing motors and more particularly to an electrc mag netic motor having oppositely facing pole faces.

The principal object of this invention is the provision of an electro inagnetic motor designed to he the sole source of operative force for a aircular or helical feeder or other similar device and wherein the poleiaces are facing opposite directions on either side of a central axis around which the motor parts are symmetrically mounted. With this construction a single axially mounted motor will deliver greater electrical energy impulses at greater efiiciency than that a similarly mounted motor the pol faces all lying in a common horizontal plane. By having oppositely facing pole faces on the electro-magnet motor members they approach an electrical efficiency greater than by the use of dual motors disposed diametrically opposite to one another functioning with their full faces facing in opposit-e direction.

Another object is the provision of an electromagnetic motor wherein the pole faces lie in planes substantially parallel with the angular disposition of the springs supporting the vibratory member of the motor. This disposition of the pole faces directs the energy impulses in lin with the movement of the springs.

Another object the provision or" an electromotor having oppositely facing pole faces which are substantially vertical. This disposition of the pole faces directs the energy impulses at angl to the movement of the springs but in phase with the arcuate movement about the central axis of the device.

Gthcr objects and advantages appear hereinafter in the following description and claims.

The acconi a' ying drawings show, for the purpose of G'Xll'ililiif ation without limiting the invention or the claims thereto, certain practical embodiments of the invention wherein;

1 is a side elevation illustrating an electromagnetic motor comprising this invention.

Fig. 2 is a elevation of the motor shown in Fig. 1 taken at right angles from that shown in Fig, 1.

5 is iso'ci c detailed View showing the core and armature structwe of the character of motor illu. ated Figs. 1

2 ing the oppositely facing pole faces. lying in vertical planes.

Fig. 6 is a side elevation of a concentrated air gap electro-magnetic motor as applied to the structure as shown in Figs. 1 and 2.

Fig. 7 is an elastomer supported vibratory motor having an electroenagnetic motor with oppositely facing pole faces.

Fig. 8 is a plan view of the motor shown in Fig. 'l to illustrate the arrangement of the vibratory supporting means.

Fig. 9 is an isometric detailed View showing the core and armature structure of the character of motor illustrated in Fig. 6.

Referring to the drawings particularly Figs. 1 and 2 the vibratory motor comprises the heavy massive base i, which is preferably a casting supported by the rubber feet 2 having mounted thereon the annular casing 3 which encloses themotorand the control parts therefor which are not shown, but which ordinarily consist of the rheostat and the rec or as the else-- taro-magnetic motors are arranged for operating on electro-magnetic impulses created from halfwave rectification, of alternating current, although the intermittent current impulses may he obtained by other methods.

A base is provided with a plurality of sloping seats Ll upon which the lower end of the tuned spring means, such as the leaf springs are mounted. The upper ends of the leaf springs are secured to the seats 5 which are formed on the underside of the frame member l. will be noted from Figs. 1 2 that the ii the spring means 5 are positioned symmetrically about the central axis of the frame l, which axis is indicated by the construction line As shown in these views the frame F is supporting in this case a feeder-bowl ill which has formed therein a helical conveying trough, as indicated at ii, which extends out of the upper end of the feeder bowl. The articles to be fed the inclined trough l l are emptied into the center of the bowl is and by the vibration of the howl the articles in turn are fed around the helix of the incline i i and come out the mouth as indicated at E2.

The electro magnetic motor it comprises the electro-magnetic field member having the coils it set upon opposite legs or" the core member to. The other electro-magnetic motor part is the armature it of which there are different types as shown in Figs. 3, 4i and 5. Ehe armature as shown in Figs. 1 and 2 similar to that shown in Fig. 3.

The core member i5 has secured thereto oppo- The coils Hi of the electro-niagnetic field of the motor l3 may be constructed so as to be connected in series and operated on the 220 volt, GS cycle, circuit or connected parallel when op erating on a 110 volt circuit, thus one motor may suffice to supply sufficient power to the feeder for a different voltage range. However, as pro viously stated, a single wave rectifier is usually placed in series with the windings of the of the electro-magnetic motor in order to provide intermittent half-wave current impulses for op- 1 crating the same and to regulate the amplitude of vibration one merely changes the voltage across;

the coils by means of a rheostat.

The armature i6 is secured to the frame l by means of the bolts 2E. The frame 2 which shown to be of hollow casting and is provided with the bolts 25 for the purpose of securing the bowl is thereto or any other type of apparatus in which is desired to provide a circular feeding motion to the material, which circular feeding motion will cause the material to flow around the container and, if it provided with an up" wardly extending helix, the material will con" tinue to flow to different elevations and the becomes a helical feeder owing to the fact h... the movement of the frame and everything that supports moves in a confined inclined arcuate path about the central axis, which movement retraces itself in both directions.

In the motor, as illustrated at Figs. 1, 2 and the core member I5 is provided with the op positely facing pole faces 22 and 23 which are also illustrated in Figs. 4 and 5. These pole represent the pair of pole faces on the core member and they face in opposite directions. They also have substantially the same slope as that of the spring means 5 as illustrated in Fig. 2.

The armature I6 is rectangular in cross tion and has two notches cut in the ends thereof to provide the pole faces 24 25 as shown in 3. The pole face 24 functions to operate with the pole face 22 and the core face co" operates with the pole face 23 of the core. However in a structure of this kind the armature member and the field members may be reversed relative to one another. The pole faces 24, thus, have the same slope as the pole faces and 23. These pole faces represent the pair of pole of the armature which face in opposite directions.

As shown in Fig. 4 the armature member has downwardly projecting legs 2%} which are likewise provided with oppositely facing pole faces and 3! that correspond with the similar sloping pole faces 22 and 23. The only difference between these two structures is that the pole faces 36 and Si are disposed on depending legs, whereas the pole faces 2d and 25 are constructed by notch" ing the ends of the armature.

Referring to Fig. 5 notches 32 and 33 have been out out of the upper end of the core member id to provide a pair of pole faces which face in opposite directions, as illustrated at 34 and 35, and the armature member 35, which is preferably a laminated structure, is substantially rectangular in cross section for its full length and the opposite sides of the opposite ends of this arma- 4 ture face in opposite directions to function as the pole faces. The laminations may be normal to these pole faces. Thus the armature 36 has a pair of pole faces which are disposed at opposite ends of the armature member and which face in opposite directions.

As shown in Fig. 6 the core member l5 of the electro-magnetic motor is provided with sloping pole faces 31 and the armature member 38 has the complementary sloping pole faces fat but they are smaller in area and are offset. [it the opposite end of the armature the pole faces slope in the opposite direction as is indicated in dotted lines. This structure is better illustrated in Fig. 9, wherein the pointed pole faces 31 and 39 concentrate the flux on the opposed pole face points which provides a more effective twisting pull on the armature.

The structure as shown in Fig. '1' is likewise a bowl feeder such as illustrated in Figs. 1 and 2. However the base casting is likewise supported by the rubber feet M and is provided with an annular opening &2 for receiving the core meinber I5 of the electro-magnetic motors, which core member has the coils l4 mounted thereon and is supported by plate 43 which bolted by the studs 44 to the base.

The base casting 2G is provided with. four sloping holes 45, each of which is placed at 90 from each other symmetrically around the casting as shown in Fig. 8. The slope of the holes 45 is substantially 45 to the horizontal.

The openings t5 are provided with annular shoulder 45 at their lower end and tube to provide an annular shoulder 41 at the upper end. Each of these shoulders is normal to the axis of the opening 45.

Each of the holes 45 is provided with dual elastomer spring element 5! which comprises an outer cylindrical shell member 5!, whic flanged at 52 seated on the annular shoulders at the end of each opening, an inner tube member 53 with the elastomer material be being vulcanized between the shell member 5| and the tube 53 and having its ends undrlated as illus trated at 55.

The tubes 54 are constructed to receive the bolts 55 which are secured in the threaded open ings in the lugs 51. One end of elastomer members 50 and their tubes 53 project beyond the cylinders 5| for enga ement. The ends of the studs 5% have washers for enga g the protruding ends of the springs which are held in locked position by the nuts 58. By taking up the nuts the tubes 53 may be drawn toward one another and thereby displace both the elastomer members accordingly as ilexure permits axial movement of the stud 56. Thus the elastomer material between the shells and the tubes is placed under shear. By tightening the bolts 58 a certain amount of shear is placed on each of the elastomer members to preload them to tune the same so that the frame 51, which is thus resiliently supported for vibration in a confined inclined arcuate path of movement, has a natural period of a few cycles from the driving frequency of the pulsating driving current.

It will be noted that the armature I6 is disposed directly above the core member l5 and is drawn downwardly by the same. However, the disposition of the elastomer members being at an angle relative to the horizontal causes the frame member 6| to be vibrated in a confined inclined arcuate path of movement in the same manner as the structure of Figs. 1 and 2, and the elastomer members with their respective studs 56 guide this movement of the frame 61.

Thus, the motor with the oppositely facing pole faces may be employed to operate a feeder or other type of motor constructed about a central axis regardless of Whether the same is supported by leaf springs or elastomer members. However the term tuned spring means as employed in the claims includes the flat leaf springs 5 as Well as the elastomer members 4|.

I claim:

1. A vibratory motor comprising a base, a frame constructed to be symmetrical about a central axis, a plurality of tuned spring means disposed at an incline and positioned symmetrically about said central axis with their opposite ends attached to said base and to said frame to support the latter for reciprocation in a confined inclined arcuate path of movementabout said central axis, a single electromagnetic motor having an armature member and a field member, said armature member having a pair of spaced pole faces, said field member including a core With a pair of spaced pole faces to co-operate with the pair of pole faces on said armature, means for mounting said motor member axially and symmetrically relative to said central axis and in operative spaced relation with one motor member secured to said base and the other motor member secured to said frame, each pole face of a pair facing in opposite directions to one another to be effective in imparting their magnetic reciprocating impulses between the field core and the armature member at an angle to the central axis to reciprocate said frame in its confined inclined arcuate path of movement.

2. The structure of claim 1 characterized in that said pole faces are inclined at an angle substantially the same as the inclined angle of the spring means.

3. The structure of claim 1 characterized in that the pole faces of said armature member extend beyond the intermediate portion of said armature.

4. The structure of claim 1 characterized in that the pole faces of said armature member are formed Within the dimensions of the intermediate portion of said armature.

5. The structure of claim 1 characterized in that said pole faces are inclined at an angle substantially the same as the inclined angle of the spring means, and the adjacent pole faces and spring means slope in the same direction,

6. The structure of claim 1 characterized in that said pole faces are inclined at an angle substantially the same as the inclined angle of the spring means, and the adjacent pole faces and spring means slope in opposite directions.

'I. i he structure of claim 1 characterized in that said pole faces are inclined at an angle substantially the same as the inclined angle of the spring means, and the pole faces of the field member core lie in vertical planes and the pole faces of the armature member lie on opposite sides thereof.

CARL S. WEYAND'I.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 2,094,697 Flint Oct. 5, 1937 FOREIGN PATENTS Number Country Date 290,006 Great Britain May 10, 1928 

